Perhaps this is where anonymous speech is important as it allows the discussion of ideas without giving importance to the persons behind them. Of courae, allowing for the fact that nothing can be truly anonymous :)
I'd like to rebut that point as we have anonymous, mainstream means to socialize nowadays. Chaotic (4chan) and moderated (mediums like Hacker News).
Users speak truth to power all the time on these platforms, is it effective? eh.
IMO there is a lot of value in these words coming from someone (from google) who is clearly switched-on, yet has A LOT to lose. Either the discussion is presented to the general populace and we accept it and learn from it, or the google employee becomes a martyr.
Either way, the fallout of this document is what interests me.